This oxygenator[1] along with a load of other kit and gas supplies replaces your lung function during a heart bypass. It swaps O2 and CO2. But it only works for

This oxygenator[1] along with a load of other kit and gas supplies replaces your lung function during a heart bypass. It swaps O2 and CO2. But it only works for hours before clots start to become a problem. The fibres in the oxygenator are coated with heparin to delay the complications. [1] http://www.medtronic.com/affinity/ http://www.medtronic.com/affinity/ edit: forgot the link!